Machine for operating upon soles



P 1942- F. E. BERTRAND 2,294,443

MACHINE FOR OPERATING UPON SOLES Filed March 13, 1941 Fig: 3.

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Patented Sept. 1, 1942 MACHENE FOR OPERATING UPON SOLES Frederic E. Bertrand, Lynn, Mass, assignor to United Shoe Machinery Corporation, Flemington, N. J a corporation of New Jersey Application March 13, 1941, Serial No. 383,191

6 Claims.

This invention relates to machines for operating on soles and is herein illustrated and described as embodied in a lip-setting machine of the type disclosed in United States Letters Patent 1,726,800, granted September 3, 1929, upon my application. The operation of lip-setting consists in progressively raising the channel lips of a double-lipped insole and pressing the raised lips together; a coating of cement having been first applied to the adjacent surfaces of the lips to cause them to adhere and form a single upstanding rib. The illustrated machine, like that disclosed in Letters Patent 1,726,300 above mentioned is provided with a pair of plows for raisin the lips, with a pair of' driven rolls between which the lips are pressed, and with a supporting roll engageable with the unlipped surface of the sole to press the sole against the plows.

A desirable condition of operation in machines of thistype is obtained by keeping both plows in engagement with the channeled surfaces of the sole beneath the lips. Some soles, however, have slight irregularities which result from local variations .of thickness or from warping. In machines wherein both plows are secured in fixed relation to each other in a direction heightwise of the sole, such irregularities may cause the surface of the sole, as it is being fed, momentarily to leave one of the plows while the sole is pressed against the other plow. This is most likely to occur when going around the toe, or at the break line between the shank and the forepart; and it may render feeding of the sole diflicult and may result in binding, especially at the localities above mentioned. The plow which is thus out of engagement with the sole is then unable to operate to the full depth of the channel, and the lip upon which it is operating may not be raised to its fullest extent. It is even possible, if there is much space between the sole and the bottom of the plow, for the lip to slip in under the plow. Moreover, when both plows are thus secured they must both be adjusted accurately with respect to each other in a direction heightwise of the sole.

It is an object of the present invention to provide a lip-setting machine arranged to insure the maintenance of both plows beneath the lips and against the sole regardless of irregularities in the sole, eliminate the need of accurate adjustment of one of the plows heightwise of the sole, and to facilitate the presentation and feeding of the work.

In accordance with a feature of this invention, one of the plows is yieldably urged against the sole independently of the other plow in a direction heightwise of the sole. The yieldably urged plow is thus maintained against the sole whiie the sole is pressed against the bottom of the other plow. In accordance with another feature, one of the plows is normally offset relatively to the other to facilitate entry beneath the channel lip, the support for the oiiset plow being yieldable to enable the offset plow to move into a position determined by the sole as the sole is pressed against the other plow. The other plow, which in the illustrated machine is stationary, sustains the pressure exerted by the supporting roll. The movable plow, yielding in a direction heightwise of the sole, is mounted for movement toward and from the supporting roll.

These and other features of the invention will appear more fully from: the following detailed description when read in connection with the accompanying drawing and will be pointed out in the appended claims. Referring now to the accompanying drawing,

Fig. 1 is a front elevation of the operating portion of the improved machine;

Fig. 2 is an enlarged view of the soie-engaging members shown in Fig. -1;

Fig. 3 is an end elevation of the upper plow and its support;

Fig. 4 is a section taken through the line IVIV of Fig. 3; and

Fig. 5 is a section taken through the line VV of Fig. 2, showing the plows and presser rolls in engagement with a sole.

The illustrated machine is in the nature of an improvement on the lip-setting machinedescribed in the above-mentioned Letters Patent, and particularly in Figs. 9 and 10 of that patent and, therefore, since many of its parts are similar inconstruction and in mode of operation to the corresponding parts shown in that patent, they will be only briefly described herein.

The Work-engaging rolls include an upper feed roll 29 and a lower feed roll 22 mounted upon the outer ends of horizontal parallel shafts 2B and 23, respectively. These rolls operate to press together a pair of channel lips L and L formed upon an insole S to cause these lips to form an upstanding rib, cement having first been applied to the adjacent surfaces of the lips. A work-supporting roll 24 engages the unlipped surface of the sole S to hold the sole in operative relation to the rolls 2% and 22. The lower feed roll shaft is journaled in a stationary portion 36 of the machine frame, while the upper feed roll shaft 26 is journaled in a bracket 32 which is pivotally mounted for heightwise swinging movement upon a stationary shaft 34 secured in the frame 30. The bracket 32 is urged downwardly to a stop position by a spring 36. The supporting roll 24 is carried upon the upper end of a vertical shaft 38 which is journaled in a head 46 mounted for horizontal movement in a directionparallel to the axes of the shafts 26 and 28. A lever 42 fulcrumed upon a pin 44, which is secured in the frame 36, carries a pin 46 engaging a vertical slot 48 in the head 40. A compression spring 58 interposed between a portion of the stationary frame 36 and a lug 52 on the lever 42 urges the head 46 inwardly to a stop position adjustably determined by a stop screw 54 threaded through a lug 55 extending from the stationary frame 36. A treadle mechanism 56 connected to the lever 42 enables the operator to move the head 48,'

therefore, and the roll 24 outwardly to facilitate the insertion of a work piece. A rod 58 interposed between the lever 42 and the bracket 32 serves also to raise the bracket 32 and therefore the upper roll to enable the upstanding rib to be introduced between the rolls 26 and 22. The rolls 26, 22 and 24 are all driven from a suitable source of power to feed the work. The machine as so far described, including the driving arrangements, is like that disclosed in the abovementioned Letters Patent 1,726,800.

It is sometimes desirable to provide for longitudinally adjusting the feed roll 26 with respect to the feed roll 22. Such adjustment in the illustrated machine is accomplished by means of a nut 60 threaded upon the outer end of the shaft 34 and having a grooved portion which is engaged by a forked end 62 of a bracket 64 secured to the bracket 32. A locking nut 66 holds the nut 68 in adjusted position.

For raising the lips L and L from the position shown in the upper portion of Fig, 2 to the position shown between the rolls 26 and 24 in Fig. 2, there are provided a pair of plows 68 and it for operating upon the inner lip L and the outer lip L, respectively. The plow i8 is provided with a shank 12 which is slidably mounted in a block 14. A screw 16 holds the shank 12 in adjusted position. The block 14 is formed upon the end of a cylindrical stem 18 which is secured in the stationary frame 36 in any desired position of angular and also longitudinal adjustment by a screw 86. The plow Iii together with its adjustable mounting arrangements is similar to the corresponding plow disclosed in the above-mentioned Letters Patent.

The upper plow 68 is provided with a vertically extending slide 82 which is mounted in a vertical guideway formed in a block 64. The slide 82 is secured in any desired position of adjustment in the block 84 by a screw 86. The block 84 is mounted for free sliding movement parallel to the axis of the shaft 26 in a guideway formed in a block 88. Extending from the block 88 is a cylindrical stem 98 engaging a cylindrical recess in the bracket 32. The rod 98 is held in any desired position of adjustment and also in any desired position of longitudinal angular adjustment in the recess by a set screw 92. Seated in a recess formed by an axial bore in the outer end of the rod 96 is a compression spring 94. The outer end of the spring 94 bears against the block 84 to urge the plow 68 outwardly. A pin 96 extending downwardly from the block 88 engages the inner end of a slot 98 formed in the block 84 to limit the outer movement of the plow 68. The rod 96 is longitudinally adjusted to bring the stop position of the plow 68 into offset relation with respect to the plow 16, the plow 68 extending outwardly beyond the plow 16. This limiting position of the plow 68 is its normal position from which it may yield inwardly or heightwise of the sole as the sole is pressed against it. The position of the plow 68 in a direction toward and from the plow 16 is controlled by the roll 26 through the bracket 32.

In operating the machine, the rolls 26, 22 and 24 are first separated by the treadle mechanism to enable the sole S to be presented to the machine. While the rolls are thus separated, the operator may turn up the lips by hand at one end of the channels and insert them beneath the rolls 26 and 22. A skilled operator, however, can readily present the sole by first entering the lower plow l0 beneath the outer lip L, and then the upper plow 68 beneath the inner lip L. The two plows thus raise the lips sufilciently to enable them later to be grasped between the rolls 28 and 22. While it is possible to present the sole in this manner even in machines having both plows secured in fixed relation to each other, the provision in the illustrated machine for the yield ing of the upper plow 68 has been found to facilitate the presentation of the sole. The operator then releases the treadle mechanism, allowing the upper roll 28 to move downwardly and press the lips together against the lower roll 22, and also allowing the supporting roll 24 to press the sole against the bottom of the plow 16. The upper plow 68 yields inwardly under the pressure of the roll 24 inasmuch as the spring 94 is relatively weak as compared with the spring 58. The drive of the three rolls is then started to cause the roll to be fed. It is evident that any irregularities due to local thickness or due to warping of the sole will not prevent engagement of the sole with both plows. Regardless of such irregularities and without requiring accurate adjustment longitudinally of the stem 98, the roll 24 will always press the sole against the bottom of the plow 16, and furthermore the spring 94 will always press the plow 68 against the sole.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a lip-setting machine, a pair of substantially parallel lip-setting rolls, supports for said rolls, a sole support movable toward and from said lip-setting rolls in a direction parallel to the axes of said lip-setting rolls, a plow carried by one of said roll supports and movable toward and from said sole support, and yieldable means urging said plow toward said sole support.

2. In a lip-setting machine, a lower lip-setting roll, an upper lip-setting roll parallel to and movable toward and from said lower roll, a sole-supporting roll movable toward and from said lipsetting rolls in a direction parallel to the axes of said lip-setting rolls, a plow movable with said upper lip-setting roll toward and from the lower lip-setting roll and movable also in a direction parallel to the axes of said lip-setting rolls, and a spring yieldably urging said plow toward said supporting roll- 3. In a lip-setting machine, a lower lip-setting roll, an upper lip-setting roll parallel to and movable toward and from said lower roll, a sole-supporting roll movable toward and from said lipsetting rolls in a direction parallel to the axes of said lip-setting rolls, a relatively strong spring urging said sole-supporting roll against the under surface of a sole having a pair of lips between said lip-setting rolls, a stationary plow for raising one of said lips and for holding the sole against the pressure of said supporting roll, a plow for raising the other lip and mounted for movement toward and from said supporting roll, a relatively weak spring for holding said movable plow yieldably against the sole, and a stop for maintaining said movable plow in a normal position oii'set from the stationary plow to facilitate insertion of the movable plow under the lip.

45. In a machine for operating upon an insole blank having inner and outer channel lips, a pair of rolls for pressing together and setting the upturned channel lips, a supporting roll engageable with the unlipped face of the sole opposite the lips, said supporting roll being movable toward and from said lip-setting rolls, a stationary plow for raising the outer lip, a plow for raising the inner lip, the second-mentioned plow being mounted for movement toward and from the supporting roll, a stop for limiting the movement of the second-mentioned plow toward the supporting roll, and means for holding the second-mentioned plow in a normal position determined by said stop, in which position the second-mentioned plow is closer to the supporting roll than the stationary plow to facilitate entry of the inner lip under the second-mentioned plow, said holding means being yieldable to enable the second-mentioned plow to move away from said normal position as the supporting roll presses the sole against the first-mentioned plow.

5. In a machine for operating on soles, a pair of plows engageable with the respective channel lips of a double-lipped insole to raise the lips, one of said plows being mounted for movement toward and away from the other plow and also for movement in a direction heightwise of a sole presented to said plows, yieldable means for controlling the position of the movable plow in a direction toward and away from the other plow, and yieldable means for urging the movable plow against the sole.

6. In a lip-setting machine a pair of plows engageable with the respective channel lips of a double-lipped insole to raise the lips, a pair of lip-setting rolls, a bracket supporting one of said rolls and one of said plows, yieldable means urging said bracket in a direction to cause the roll carried thereon to approach the other roll and to cause the plow carried thereon to approach the other plow, and means on said bracket for yieldably urging the plow carried thereon against the sole.

FREDERIC E. BERTRAND.

(J/ff v CERTIFICATE OF CORRECTION. I Patent No. 2,29ll.;hl+5. September 1, 1914.2.

FREDERIC E. BERTRAND. I

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, firstcolumn, line 67-68, strike out the word angular and insert the same before "adjustment" in line 66; and that the said Letters Patent should be read with this correction ther'einthat the samem ay confonnto the rec- 0rd of the case in the Patent Office.

Signed and sealed this 10th day of November, A. D. 19'4-2.

Henry Van Arsdale, Acting Commissioner of Patents. 

